Catalytic epoxidation of cyclooctene using molybdenum(VI) compounds and urea-hydrogen peroxide in the ionic liquid [bmim]PF6

2007 ◽  
Vol 8 (7) ◽  
pp. 987-990 ◽  
Author(s):  
Matthew Herbert ◽  
Agustín Galindo ◽  
Francisco Montilla
2013 ◽  
Vol 68 (10) ◽  
pp. 1138-1142 ◽  
Author(s):  
Lilian R. Graser ◽  
Sophie Jürgens ◽  
Michael E. Wilhelm ◽  
Mirza Cokoja ◽  
Wolfgang A. Herrmann ◽  
...  

Polyoxomolybdates were generated in situ by treating a carboxylic acid-functionalized ionic liquid with an aqueous solution of sodium molybdate. This reaction mixture was applied in the catalytic epoxidation of olefins using hydrogen peroxide as oxidant. The influence of acid and catalyst concentration as well as of the reaction temperature was investigated. The system showed a good performance for the epoxidation reaction and can be reused several times without a significant loss of activity. We present an easy, cheap and environmentally friendly catalytic system for the epoxidation of cis-cyclooctene.


RSC Advances ◽  
2015 ◽  
Vol 5 (81) ◽  
pp. 65870-65873 ◽  
Author(s):  
R. Dileep ◽  
B. J. Rudresha

A catalytic system consisting of copper complex and hydrogen peroxide in Emim ionic liquid medium was effective in the epoxidation of olefins and terpenes. The catalyst and the ionic liquid mixture was recycled and reused consistently.


Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1477
Author(s):  
Roberto Calmanti ◽  
Nicola Sargentoni ◽  
Maurizio Selva ◽  
Alvise Perosa

Conversion of unsaturated fatty acids, FAMEs or triglycerides into the corresponding cyclic organic carbonates involves two reaction steps—double-bond epoxidation and CO2 insertion into the epoxide—that are generally conducted separately. We describe an assisted-tandem catalytic protocol able to carry out carbonation of unsaturated methyl oleate in one-pot without isolating the epoxide intermediate. Methyl oleate carbonate was obtained in 99% yield and high retention of cis-configuration starting from methyl oleate using hydrogen peroxide and CO2 as green reagents, in a biphasic system and in the presence of an ammonium tungstate ionic liquid catalyst with KBr as co-catalyst.


2012 ◽  
Vol 39 (9) ◽  
pp. 1358-1362
Author(s):  
She-Ying DONG ◽  
Guang-Zhe GU ◽  
Zhu-Qing YU ◽  
Yuan-Zhen ZHOU ◽  
Hong-Sheng TANG ◽  
...  

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